|
Gigantobilharzia
Schistosomatidae is a family of digenetic trematodes with complex parasitic life cycles. Immature developmental stages of schistosomes are found in molluscs and adults occur in vertebrates. The best studied group, the blood flukes of the genus ''Schistosoma'', infect and cause disease in humans. Other genera which are infective to non-human vertebrates can cause mild rashes in humans. Schistosomatids are dioecious (individuals are of separate sexes) which is exceptional with regards to their phylum, Platyhelminthes, in which most species are hermaphroditic (individuals possess both male and female reproductive systems). History The eggs of these parasites were first described by Theodor Bilharz, a German pathologist working in Egypt in 1851 who found the eggs during the course of an autopsy. He wrote two letters to his former teacher Karl Theodor Ernst von Siebold in May and August 1851 describing his findings. von Siebold wrote a paper (published in 1852) summarizing Bilharz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swimmer's Itch
Swimmer's itch, cercarial dermatitis or schistosome dermatitis is a short-term allergic contact dermatitis occurring in the Human skin, skin of humans that have been infected by water-borne schistosomatidae, schistosomes, a type of Trematoda, flatworm. It is common in freshwater, brackish and marine habitats worldwide. The Incidence (epidemiology), incidence of this condition may be increasing, although this may be attributed to better monitoring and reporting. Nevertheless, the condition is considered to be an emerging infectious disease. The main symptom is itchy papules (raised skin) that commonly occur within 2 days of infection. Initially, wheals develop quickly, then turn into Skin condition#Macule, maculae in about half an hour. Within 10–12 hours these turn into very itchy papules that reach their worst by the second or third day. The papules disappear in 1–2 weeks but secondary effects from scratching can continue longer. The intense itching, which peaks after 48–7 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Schistosoma Mansoni
A paired couple of ''Schistosoma mansoni''. ''Schistosoma mansoni'' is a water-borne parasite of humans, and belongs to the group of blood flukes (''Schistosoma''). The adult lives in the blood vessels ( mesenteric veins) near the human intestine. It causes intestinal schistosomiasis (similar to '' S. japonicum'', '' S. mekongi'', ''S. guineensis'', and '' S. intercalatum''). Clinical symptoms are caused by the eggs. As the leading cause of schistosomiasis in the world, it is the most prevalent parasite in humans. It is classified as a neglected tropical disease. As of 2021, the World Health Organization reports that 251.4 million people have schistosomiasis and most of it is due to ''S. mansoni''. It is found in Africa, the Middle East, the Caribbean, Brazil, Venezuela and Suriname. Unlike other flukes (trematodes) in which sexes are not separate (monoecious), schistosomes are unique in that adults are divided into males and females, thus, gonochoric. However, a permanent ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spirorchiidae
Spirorchiidae is a family of digenetic trematodes. Infestation by these trematodes leads to the disease spirorchiidiosis. Spirorchiids are mainly parasites of turtles. It has been synonymised with Proparorchiidae Ward, 1921, Spirorchidae Stunkard, 1921, and Spirorchiidae MacCallum, 1921. Genera *'' Amphiorchis'' Price, 1934 *'' Baracktrema'' Roberts, Platt & Bullard in Roberts, Platt, Orélis-Ribeiro & Bullard, 2016 *'' Cardiotrema'' Dwivedi, 1967 *'' Carettacola'' Manter & Larson, 1950 *'' Cheloneotrema'' Simha & Chattopadhyaya, 1980 *'' Coeuritrema'' Mehra, 1933 *'' Enterohaematotrema'' Mehra, 1940 *'' Hapalorhynchus'' Stunkard, 1922 *'' Hapalotrema'' Looss, 1899 *'' Learedius'' Price, 1934 *'' Monticellius'' Mehra, 1939 *'' Neocaballerotrema'' Simha, 1977 *'' Neospirorchis'' Price, 1934 *'' Plasmiorchis'' Mehra, 1934 *'' Platt'' Roberts & Bullard in Roberts, Arias, Halanych, Dang & Bullard, 2018 *'' Satyanarayanotrema'' Simha & Chattopadhyaya, 1980 *'' Shobanatrema'' Simha & ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sanguinicolidae
Aporocotylidae is a family of trematodes within the order Diplostomida Diplostomida is an order of trematodes in the subclass Digenea. It is synonymous with Strigeatida Poche, 1926. Families Order Diplostomida *Suborder Diplostomata **Superfamily Brachylaimoidea Joyeux & Foley, 1930 ***Brachylaimidae Joyeux & Foley ..., which contains species commonly known as fish blood flukes. It contains more than 40 genera, the largest being '' Cardicola''. Species in this family parasite fish in both fresh and marine water. Genera * Acipensericola Bullard, Snyder, Jensen & Overstreet, 2008 * Adelomyllos Nolan & Cribb, 2004 * Ankistromeces Nolan & Cribb, 2004 * Aporocotyle Odhner, 1900 * Cardallagium Yong, Cutmore, Jones, Gauthier & Cribb, 2017 * Cardicola Short, 1953 * Chaulioleptos Nolan & Cribb, 2005 * Chimaerohemecus van der Land, 1967 * Cladocaecum Orelis-Ribeiro & Bullard, 2016 * Cruoricola Herbert, Shaharom-Harrison & Overstreet, 1994 * Deontacylix Linton, 1910 * E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gondwana
Gondwana ( ; ) was a large landmass, sometimes referred to as a supercontinent. The remnants of Gondwana make up around two-thirds of today's continental area, including South America, Africa, Antarctica, Australia (continent), Australia, Zealandia, Arabian Peninsula, Arabia, and the Indian subcontinent. Gondwana was formed by the Accretion (geology), accretion of several cratons (large stable blocks of the Earth's crust), beginning with the East African Orogeny, the collision of India and Geography of Madagascar, Madagascar with East Africa, and culminating in with the overlapping Brasiliano orogeny, Brasiliano and Kuunga orogeny, Kuunga orogenies, the collision of South America with Africa, and the addition of Australia and Antarctica, respectively. Eventually, Gondwana became the largest piece of continental crust of the Paleozoic Era, covering an area of some , about one-fifth of the Earth's surface. It fused with Laurasia during the Carboniferous to form Pan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Griphobilharzia
''Griphobilharzia amoena'' is a significant trematode that infect crocodiles such as the Australian freshwater crocodile, '' Crocodylus johnstoni'', located in Darwin, Australia with reported illness in Irian Jaya as well. Platt TR, Blair D, et al. 1991. ''Griphobilharzia amoena'' n. gen., n. sp. (Digenea: Schistosomatidae), a parasite of the freshwater crocodile ''Crocodylus johnstoni'' (Reptilia: Crocodylia) from Australia, with the erection of a new subfamily, Griphobilharziinae. ''Journal of Parasitology'' 77:65–68. They possess a distinctive tegument that is composed of two lipid bilayers instead of a single bilayer. The double bilayer may be an adaptation to survive the host's immune response. Description The life cycle remains unknown but cercariae probably develop in mollusks, most likely gastropods. Its intermediate host could be freshwater snails from family Planorbidae.Brant S.V., Loker E.S. 2005''Can Specialized Pathogens Colonize Distantly Related Hosts? Schist ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crocodylus Johnstoni
The freshwater crocodile (''Crocodylus johnstoni)'', also known commonly as the Australian freshwater crocodile, Johnstone's crocodile, and the freshie, is a species of crocodile native to the northern regions of Australia. Unlike its much larger Australian relative, the saltwater crocodile, the freshwater crocodile is not known as a man-eater, although it bites in self-defence, and brief, nonfatal attacks have occurred, apparently the result of mistaken identity. Taxonomy and etymology When Gerard Krefft named the species in 1873, he intended to commemorate the man who first sent him preserved specimens, Australian native police officer and amateur naturalist Robert Arthur Johnstone (1843–1905). However, Krefft made an error in writing the name, and for many years, the species has been known as ''C. johnsoni''. Recent studies of Krefft's papers have determined the correct spelling of the name, and much of the literature has been updated to the correct usage, but both versio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Griphobilharzia Amoena
''Griphobilharzia amoena'' is a significant trematode that infect crocodiles such as the Australian freshwater crocodile, '' Crocodylus johnstoni'', located in Darwin, Australia with reported illness in Irian Jaya as well. Platt TR, Blair D, et al. 1991. ''Griphobilharzia amoena'' n. gen., n. sp. (Digenea: Schistosomatidae), a parasite of the freshwater crocodile ''Crocodylus johnstoni'' (Reptilia: Crocodylia) from Australia, with the erection of a new subfamily, Griphobilharziinae. ''Journal of Parasitology'' 77:65–68. They possess a distinctive tegument that is composed of two lipid bilayers instead of a single bilayer. The double bilayer may be an adaptation to survive the host's immune response. Description The life cycle remains unknown but cercariae probably develop in mollusks, most likely gastropods. Its intermediate host could be freshwater snails from family Planorbidae.Brant S.V., Loker E.S. 2005''Can Specialized Pathogens Colonize Distantly Related Hosts? Schis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent after Asia. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 20% of Earth's land area and 6% of its total surface area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With nearly billion people as of , it accounts for about of the world's human population. Demographics of Africa, Africa's population is the youngest among all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Based on 2024 projections, Africa's population will exceed 3.8 billion people by 2100. Africa is the least wealthy inhabited continent per capita and second-least wealthy by total wealth, ahead of Oceania. Scholars have attributed this to different factors including Geography of Africa, geography, Climate of Africa, climate, corruption, Scramble for Africa, colonialism, the Cold War, and neocolonialism. Despite this lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since 2023; and, since its independence in 1947, the world's most populous democracy. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is near Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations averag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
